Skelenton And Musclar System Flashcards
How many bones in the body
Adult bones-206 children bones - way more
Cartilage
Acts as shock absorber,stop bones rubbing off each other
Joint
Were two bones meet
Fused joint
Do not alloy bones to move e.g skull
Synovial joints
Alloy bones to move
- ball and socket
- hinge joint
Ball and socket joint
Allows movement in serval directions
Hinge joint
Allows one movement in one plane only e.g. knee and elbow
Synovial fluid
Acts as a shock absorber
Ligaments
Tough,elastic fibres hold the bones together
Antagonistic pairs
Muscles can only Contract they can only pull bones
Sensitvity
Detecting and responding to a stimulus
Stimulus
is something that causes a response e.g a loud noise stimulates me to jump
Nervous system
Brain,spinal cord,all the nerves
Sensory nerve
Sends a message to the brain from the sense organ
Moor nerve
Sends a message from the brain to a muscle